Unless you are unhappy with what you currently have, leave it. Gaming, surfing, etc. I have about the same settings as you, but the CPU is a higher rate than yours with an i3 2100. Also the SSD is higher.

The rating IS a good indicator of system performance on the most basic scale. Nothing more, nothing less. If I feel a slow down from one machine to the next, I actually check that rating to see if it's off for some reason, as two machines with the same or similar components should score virtually identical.